Prospective CT Assessment After DCB

Inclusion Criteria: * Patients with Age ≥ 19 * Patients who took CCTA and were found to have coronary artery disease requiring reperfusion * Patients who underwent DCB within 3 months after CCTA and whose clinical presentation remained largely unchanged from the time of CCTA. * The target lesion is a de novo lesion with a vessel diameter between 2.25mm and 3.00mm * Patients deemed suitable for coronary intervention using drug-coated balloon by clinical assessment * Patients who have been adequately informed about this study and have voluntarily provided written consent to participate. Exclusion Criteria: * The target lesion is an in-stent restenosis lesion * Patient requiring emergency salvage stenting in target lesion * Patients with a stent previously implanted in the same vessel * Lesions involving chronic total occlusion or prior coronary artery bypass grafting (CABG). * Patients with eGFR (estimated glomerular filtration rate) \< 45 ml/min/1.73mm2 * Patients with coronary artery calcium score ≥ 1000 as determined by CCTA * Patients with an expected survival of less than 5 years * Pregnant or breastfeeding patients * Patients deemed inappropriate to participate in this study based on the judgment of study investigators